DRINKING WATER

GettyImages-2176083692 hurricane Building Resilient Water Treatment: How Ozone Systems Help Utilities Prepare for Extreme Weather

Ozone systems build resilience into water treatment. They ensure utilities remain chemically self-sufficient, allow fast recovery from power outages, and handle rapid water quality shifts.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • Global Pharmaceutical Company EnviQ Membrane Bioreactor (MBR)

    The Serum Institute is a global pharmaceutical company that is one of the world’s largest producers of vaccines. The Institute was planning an expansion to their manufacturing plant in Pune, India, that resulted in an additional water requirement for the plant’s needs.

  • Multi-Barrier Treatment Strategy - New York City

    New York City is home to more than 8 million people, making it the most populous city in the United States. The majority of New York's drinking water is supplied by the Catskill/Delaware watershed, located approximately 100 miles outside the city. Historically, NYC has not filtered the water from this system, nor did they require any additional barriers to microbial contaminants due to the pristine nature of the watershed.

  • 9 Reasons Why Drinking Water Distribution System Monitoring Is Now Practical

    Drinking water professionals and engineers understand that maintaining safe and high-quality water throughout the distribution system is a critical responsibility. Chlorine, the backbone of disinfection, ensures safety, but its effectiveness can falter in the complex network of pipes, tanks, and dead ends.

  • Solutions For Every Stage Of The Water Lifecycle

    Solving daunting water scarcity challenges serve as the battle cry for the modernization of the water industry; and for many addressing these challenges, is their north star in their pursuit of innovation in water design and management.

  • 4 Treatment Plant Budget Busters To Avoid

    Municipalities work diligently to produce quality drinking water and meet strict wastewater treatment regulatory standards while managing expenses. Advanced technologies allow utilities to gather actionable information and strategically offset deficiencies.

  • GAO Report Promotes New Way To Advance LSL Remediation

    In a report released just days before the U.S. EPA issued its final revisions to the Lead and Copper Rule (LCR), the U.S. Government Accountability Office (GAO) provided insights that water utilities can use to achieve better protections for water customers in neighborhoods at higher risk of lead exposure. Here is a peek into its four recommendations, which the GAO anticipated updating in response to the EPA final LCR revisions.

  • A Collaborative Leakage Project With Anglian Water

    With an aging distribution network becoming ever-more prone to leaks and bursts, it is clear utilities cannot continue to do what they have always done. Industrial IoT is reshaping the landscape.

  • On The Job In 72 Hours Following Utility's Massive Water Main Break

    On the morning of December 12, 2017, about 30 homes in the Shelby Park neighborhood of Lousiville, KY, were without water, and others were experiencing low water pressure after a massive water main break at the intersection of Clay and Oak streets. More than 20 million gallons of water flooded the neighborhood, covering a three-block area.

  • The Science Of Mixing And Improving Water Quality In Water Storage Tanks

    Water storage tanks and reservoirs are a critical component of distribution systems, yet they can pose a significant challenge for water utilities as they often have a negative impact on water quality. Water quality problems can develop due to low turnover and/or inadequate mixing resulting in short-circuiting. While the benefits of maximizing tank turnover to minimize water age are generally understood, it is only recently that extensive research on mixing characteristics of storage tanks has been undertaken that has provided insight on what causes water quality problems and expertise in designing inlet/outlet pipe configurations, or mixing systems, to achieve complete mixing and maintain water quality.

  • ABB Flowmeters Help Cut Water Loss In Bangkok

    ABB’s AquaMaster flowmeters have been integral to the overall water management solution. Over 400 AquaMaster flowmeters actively serve the Bangkok Metropolitan area helping optimize the management of the water distribution network. 

DRINKING WATER APPLICATION NOTES

DRINKING WATER PRODUCTS

The Aztec 600 Phosphate Analyzer AW636 has been designed specifically for the measurement of phosphate in both potable water and municipal wastewater effluents. It offers reliable and accurate on-line analysis of phosphate up to 50 ppm PO4.

The Aztec 600 Aluminium Analyzer AW631 has been designed specifically for the measurement of aluminium in potable water applications. It offers reliable, and accurate, on-line analysis of aluminium up to 2 ppm.

Harmsco has developed a higher capacity filter housing that is BABA compliant, and it is available in a 3X, as well as a 5X model.

CyanoFluor is a dual-channel handheld fluorometer designed for harmful algal bloom monitoring. By measuring chlorophyll-a and phycocyanin simultaneously, it differentiates cyanobacteria from other phytoplankton with precision. Portable, factory calibrated, and easy to use, CyanoFluor supports early detection, rapid assessment, and ongoing monitoring of blooms, protecting ecosystems, aquaculture, and drinking water supplies from the impacts of toxic algae.

The PanaFlow gas meter system consists of two models— the one-path PanaFlow Z1G and the two-path PanaFlow Z2G. Both meters offer a high-performance, yet affordable solution for a variety of gas flow applications.

The presence of active pharmaceutical ingredients, radio-opaque substances and endocrine disrupting chemicals in raw water sources is a relatively new emerging issue in relation to drinking water quality. However, the influence of pollutants on health and general well-being is becoming apparent with the incidence of carcinoma increasing and fertility rates being affected. A solution for the efficient removal of these substances from water use by production sites is required.

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

North Carolina’s Cape Fear River is a massive water system. It stretches across the lower half of the state, collecting runoff from 29 counties and providing water to millions of people. But in the city of Wilmington, where the river meets the Atlantic Ocean, the water has residents worried.

New sensor offers continuous monitoring, immediate detection of lead.

Bill Gates challenges Jimmy to taste test water from the Omniprocessor, which turns sewage into clean drinking water.

EPA Administrator Gina McCarthy speaks at the 40th Anniversary of the Safe Drinking Water Act (SDWA) on December 9, 2014 at the National Press Club in Washington, D.C.

Rather drink sewage water than LA tap water any day.

ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.